A Spiral Galaxy
The group is known as a constellation.
The group of stars is called Constellation. I think it's cluster.
A group of stars that form a picture is called a constellation. These patterns are recognized and named by different cultures around the world.
A group of stars that form a pattern is a constellation. it forms many different patterns, such as Aries, Libra, Scorpio, Leo, Capricorn, etc.
Spiral galaxies are named for the (usually two armed) spiral structures that extend from the centre into the disk.The spiral arms are sites of ongoing star formation and are brighter than the surrounding disk because of the young, hot stars.See related link for a pictorial representation.
That is a galaxy. The one we live in is called the Milky Way. There are millions of other galaxies in the universe, many of which have a spiral structure (and probably a black hole in the middle).
The group is known as a constellation.
Stars form in the great clouds of gas and dust in the spiral arms of a galaxy.
the three main types of galaxies are spiral, elliptical and irregular spiral contains spiral arms contained gas, dust and they help new stars form
Stars form in all parts of our galaxy - not just the "arms". Stars do indeed form in the central bulge. The vast majority of hot, young, blue stars are formed in the arms, but stars also form in the central bulge as well.
well, my opinion would be because of the objects and the planets in our galaxie, the spiral galaxie.
A group of stars that form a picture (at least in human eyes) is known as a constellation.
Spiral galaxies form from the collapse of a protogalactic cloud. Spiral galaxies consist of three components: a rotating disk, a bulge and a halo. Spiral galaxies, like the Milky Way, owe their shape to stars inside the protogalaxy developing at different intervals. The gas between forming stars continues to be compressed, and the resulting gravitational differences manhandle the protogalaxy's stars, dust and gas. When the protogalactic cloud collapses, the stars in the bulge and halo form first. These stars have rather random orbits around the galactic center. The galactic center probably contains a supermassive black hole, which likely exerts some gravitational influence on the formation of a spiral galaxy. The remainder of the cloud forms a disk due to the conservation of angular momentum (the same effect as the spinning up of the dancer when she pulls her arms inside). This motion forces everything into a rotating disk, and additional differences in gravity build the spiral arms. Oppositely, when a protogalaxy's stars develop at the same time, you have an elliptical galaxy on your hands. The stars in the disk form later and thus the disk population of stars are younger than those in the bulge and the halo. Further, the stars in the disk rotate around the center of the galaxy in a collective, well defined way unlike the stars in the bulge and halo.
The higher gas density forms stars more efficiently, so all the gas is converted into stars before a disk can form.
constellations
a constellation
Constellations